Aluminum is a very active metal. It is easy to combine with oxygen in the air to form a dense natural oxide film. The molar volume of this oxide film is much larger than that of aluminium. Even if it is damaged, it will regenerate immediately. Therefore, it can be used for various surface processing of industrial aluminium profiles, such as anodic oxidation, polishing, and so on. Spraying, electroplating and so on, these treatments can improve the densification of the oxide film, increase the thickness of the oxide film, improve the insulation and corrosion resistance of the oxide film, wear resistance, heat resistance and various decorative properties, to be applied in various industrial environments.